What is the abbreviation for Chief Warrant Officer Four in the Navy?

The abbreviation for Chief Warrant Officer Four in the Navy is CWO4. This designation is part of the Navy's rank structure for warrant officers, which includes various levels indicated by their numerical suffixes. In this case, the "4" in CWO4 specifically denotes the rank of Chief Warrant Officer Four, distinguishing it from other ranks within the warrant officer series such as CWO2, CWO3, and CWO5, which represent lower and higher ranks respectively. The numbering system is crucial as it defines the hierarchy and progression within the warrant officer ranks, making CWO4 the accurate abbreviation for this specific rank.